I do know that they might qualify. I would not have asked if that is what I wnted to know.
The exact details are as follows:
Daughters where born in 1992 and 1995 respectively.
Father Born Northern Rhodesia, November 1961. He has British Passpoert that states British Citizen (Unkown if British by Birth or Decent)
Mother was Born in Swaziland but is a South African Citizien, never had Swazi citizenship only South African
Paternal grandparents were both born in England and both held British passports (grandfather has passed, Grandmother still alive)
Maternal Grandparents were both born in South Africa.
If I could get a definitive answer would be appreciated as it is an expensive process to enter into if unknown.
Thank you for your advise.